Crank Case

The case that houses your engine cylinder, crank, crankshaft, and cam is called the crank case. Basically, engine crank case is made of cast iron. You can also call it the sump of lubricating oil. This case stores lubricating oil to give all inner moving parts like cam shaft, connecting rod, and crankshaft and so on, a smooth movement and rotation with reduced frictional losses. You will find the lower end of your engine crank case fixed with bolts, which is known as bed plate.